ci: debug failing windows tests

src/plugins.ts

@@ -391,6 +391,8 @@ export default class Plugins {
   }
 
   private async maybeCleanUp(): Promise<void> {
+    // TODO: remove this. It's just here for testing purposes.
+    if (process.env.CI) return
     // If the yarn.lock exists, then we assume that the last install was done with an older major
     // version of plugin-plugins that used yarn (v1). In this case, we want to remove the yarn.lock
     // and node_modules to ensure a clean install or update.